Steam-boiler covering



(No Model.)

W. H. McKINNEY.

STEAM BOILER COVERING.

No. 319,738. PqtentedJune 9, 1885. M a

WITNESSES Attorney N. PETERS. Phulo-Ililfiognphur. Wilhhgioll', D. c.-

PATE T Erica.

WILLIAM H. MCKINNEY, OF EYANSVILLE, INDIANA.

STEAM-BOlLER COVERING- SPECIFICATION forming part of I etters Patent No. 319,738, dated June 9, 1885.

Application filed April 21, 1985. (No model.)

pipes, drums, or boilers, and has for its object' to prevent the radiation of heat and condensation in steam pipes, drums, and boilers.

Thenature of the invention consists,

First. In covering the steam-pipe with asbestus sheeting of suitable lengths and widths, and attaching the same to the pipe by means of a fire-proof cement, then wrapping said pipe spirally on the outside of the sheeting with a rope composed of'asbestus or other fire proof non-conducting material, said rope being preferably secured to the pipe by means of annealed iron wire.

Secondly. By covering the asbestus rope with a cylinder of sheet metal, whereby aspiral air-space is formed on the outside of the steam-pipe, between the pipe and the outside cylinder, the rope being intended to maintain the pipe and outer cylinder the desired distance apart; and, further, the said cylinder is intended to be covered, also, with asbestus sheeting in the same manner as the steam-pipe, and attached thereto by fireproof cement. The cylinder may then be covered by a spirally-wound asbestus rope secured thereto, preferably, by means of annealed iron wire. This second rope may then be covered, in the same manner as the first, with a second sheetmetal cylinder, having also a covering of asbestus sheeting secured thereto by fire-proof cement; and in this manner any number of ropes and cylinders may be employed to produce any desired number of air-spaces surroundingasteam-pipe or steam-generator; but I do not confine myself to the use of cement for the above-named purposes, as other means may be employed without departing from my in- 50 Vention.

Thirdly. The outer cylinder of the series (whether one or more cylinders are used) is to be covered with hair or hair-felt, over which is secured an outer covering of canvas, to be painted of any desired color, and preferably with fire-proof paint.

The objects of this invention,'as hereinbefore stated, are attained by the devices illustrated in the accompanying drawings, forming a part of this specification, in which Figure 1 is a side elevation with some of the parts removed to show the construction of the remainder. Fig. 2 is a sectional view. Fig. 3 is a detached view of two pieces of a sheet-iron cylinder, and showsthe details of construction. Fig. 4 is a detached view of a rope and the hook by means of which it is secured to a cylinder. Fig. 5 is a detached view of one piece of sheet-iron cylinder.

The letter A indicates a steam-pipe; F, a rope of asbestus or other non-conducting fireproof material wound spirally thereon and secured thereto by means of annealed wire bands f.

. a is the asbestus sheeting, secured to the out- 75 side of pipe A.

B is a sheet-metal cylinder covered on the outside with asbestus sheeting a.

F is a rope of asbestus or other fire-proof non-conducting material, secured to cylinder B by means of annealed wire wrapping f.

G is a second sheet-metal cylinder covered with asbestus sheeting a, which surrounds the outside of the spirally-wound rope F, and serves to protect the rope F, and also to form air-spaces around the cylinder B.

G is the hair-felt surrounding the outer cyl inder, G, and D the canvas on the outside thereof.

E is a funnel-shaped cap of sheet metal, surrounding the pipe A at one end, (or both,) and is secured thereto by loops 6 e and bolt 6. This cap is intended to make a finish, and also to cover up the ropes, cylinders,hair-cloth, and canvas composing the covering of the 5 pipe A. o

g are small cuts in either of the cylinders C or B, or both, and serve to prevent one cylinder from telescoping over another when a series are used to make the entire pipe B or O.

H is a piece of metal having a ring on one end, which is intended to encircle one of the ICO ropes F or F, and the other bent into the shape of a hook to engage with one of the cylinders B or O.

The spirally-formed air-spaces surrounding the pipe A and the cylinder B permit the air to circulate therein, and thereby aid in the resistance of the effects of a great degree of heat and to preserve the sheets of iron.

The cement used to paste the asbestus sheeting to the pipe A and cylinders B C is composed of flour, six pounds; glue, one pound; alum, two ounces, and water, three gallons.

Having described my invention, what I desire to secure by Letters Patent and claim is- 1. A steam-pipe having asbestus sheeting with one ormore sheet-metal cylindersinclosing said pipe and rope and forming an airspace between the two, substantially as described, and for the purposes herein set forth. 2. The steam-pipe A, having a covering of asbestus sheeting, and the spirally-wound rope F, in combination with cylinder B, having a covering of asbestus sheeting, cylinder 0, hairfelt G, and canvas D, as described, and for the purposesset forth.

3. The steam-pipe A, in combination with cap E, having loops 6 e and bolt e, as described, and for the purposes set forth.

4. The steam-pipe A, the spirally-wound asbestus rope F, secured thereto by wire f, the cylinder B, and spirally-wound asbestus rope F, secured thereto by wire f, in combination with outer covering of hair-felt G, canvas D, and cap set forth. cemented on the outside thereof and spirallywound asbestus rope thereon, in combination E, as described, and for the purposes In testimony whereof I affix my signaturein presence of two witnesses.

WILLIAM H. MOKIN N EY.

Witnesses:

W. P. LEONARD, O. G. GENUNG. 

